Do gray wolves (Canis lupus) support pack mates during aggressive inter-pack interactions?

  title={Do gray wolves (Canis lupus) support pack mates during aggressive inter-pack interactions?},
  author={Kira A. Cassidy and Richard T. McIntyre},
  journal={Animal Cognition},
For group-living mammals, social coordination increases success in everything from hunting and foraging (Crofoot and Wrangham in Mind the Gap, Springer, Berlin, 2010; Bailey et al. in Behav Ecol Sociobiol 67:1–17, 2013) to agonism (Mosser and Packer in Anim Behav 78:359–370, 2009; Wilson et al. in Anim Behav 83:277–291, 2012; Cassidy et al. in Behav Ecol 26:1352–1360, 2015). Cooperation is found in many species and, due to its low costs, likely is a determining factor in the evolution of living… 
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